According to this article, http://www.cbssports.com/nba/eye-on-basketball/25539445/report-despite-turmoil-bulls-wont-fire-fred-hoiberg, not very high. It's unlikely Chicago would be willing to pay both Thibodeau and Hoiberg while neither is coaching the team, plus Hoiberg was management's top target last season, so they're kind of tied to him. Thibodeau would be a nice get though.